How Does Business Asset Disposal Relief Apply to a Dental Practice Sale in 2026/27?

If you are planning to sell your dental practice, the tax treatment of your gain is one of the most important financial decisions you will make. Business Asset Disposal Relief (BADR), formerly known as Entrepreneurs' Relief, reduces the Capital Gains Tax (CGT) rate on your practice sale from 24% to 18% in the 2026/27 tax year. For a £1m gain, that is a potential saving of £60,000. (Disposals made on or before 5 April 2026 attracted the old 14% rate.) But the relief is not automatic. HMRC imposes strict conditions, and the rules have changed several times in recent years. This article explains exactly how BADR applies to a dental practice sale, what you need to qualify, and the common traps that cost dentists thousands.

What Is Business Asset Disposal Relief?

Business Asset Disposal Relief is a CGT relief that applies when you sell or dispose of certain business assets. It was introduced in 2008 as Entrepreneurs' Relief and was renamed in the 2020 Budget. The core benefit is a reduced CGT rate on qualifying gains, subject to a lifetime limit.

For 2026/27, the BADR rate is 18% on gains up to £1m. The rate was 14% for disposals in 2025/26 and 10% for disposals before 6 April 2025, so always read the rate alongside the disposal date. Gains above the £1m lifetime limit are taxed at the standard CGT rate: 24% for higher-rate taxpayers (which most practice sellers will be) or 18% for basic-rate taxpayers.

The relief applies to disposals of:

• A business (or part of a business) carried on as a sole trader or partnership.
• Shares in a company where you are an officer or employee and hold at least 5% of the ordinary share capital and voting rights.
• Assets used by your business after the business has ceased (within three years of cessation).

For a dental practice sale, the most common scenarios are selling the practice as a going concern (either as a sole trader, partnership, or through a company) or selling the goodwill and assets of the practice.

Qualifying Conditions for a Dental Practice Sale

To claim BADR on a dental practice sale, you must meet several conditions. The exact conditions depend on whether you are selling as an individual (sole trader or partnership) or through a company.

Sole Trader or Partnership Sale

If you own the practice as a sole trader or as a member of a partnership, the conditions are:

• You must have owned the business for at least 24 months up to the date of disposal.
• The business must be a trading business (dental practice qualifies as trading for these purposes).
• The disposal must be of the whole business or a significant part of it. Selling individual assets piecemeal may not qualify.

For a typical single-handed principal selling their practice as a going concern, this is straightforward. The 24-month ownership period is usually met. However, if you recently incorporated the practice into a limited company and then sell the company shares, the 24-month period runs from incorporation, not from when you started the practice as a sole trader.

Company Share Sale

If you operate the practice through a limited company and sell the company shares, the conditions are stricter:

• You must be an officer or employee of the company (director or employee).
• You must hold at least 5% of the ordinary share capital and voting rights.
• You must be entitled to at least 5% of the distributable profits and assets on a winding-up.
• The company must be a trading company (or the holding company of a trading group).
• All these conditions must be met for at least 24 months ending with the date of disposal.

For a practice owner who incorporated five years ago and has been a director with 100% shareholding since, this is usually fine. But for a practice where shares are split between multiple directors, or where one partner holds less than 5%, the relief may not apply to that individual.

The £1m Lifetime Limit

The BADR lifetime limit is £1m per individual. This means you can claim relief on total gains of up to £1m across your lifetime. If you have already used some of your allowance on a previous business sale, the remaining amount is reduced.

For a dental practice sale, the gain is typically the sale price minus the original cost (and any allowable costs such as professional fees). If the practice is owned jointly by two partners, each partner has their own £1m limit. So a practice sold for £2m with two equal partners could see each partner claim BADR on their £1m gain, provided the conditions are met.

If the gain exceeds £1m, the excess is taxed at the standard CGT rate (24% for higher-rate taxpayers in 2026/27). This is a common scenario for high-value practices in London or the South East.

Worked Example: Dr Patel Sells Her Practice

Dr Patel has owned a single-handed NHS and private dental practice as a sole trader for 12 years. She sells the practice as a going concern on 1 September 2026 for £1.4m. The goodwill and assets are sold together. Her base cost (what she originally paid for the practice plus improvements) is £200,000. Her gain is £1.2m.

She qualifies for BADR because she has owned the business for more than 24 months. Her CGT calculation at the 2026/27 rates is:

• First £1m gain: taxed at 18% = £180,000
• Remaining £200,000 gain: taxed at 24% = £48,000
• Total CGT: £228,000

Without BADR, the whole £1.2m would be taxed at 24% = £288,000. The relief saves her £60,000. (Had her disposal date fallen on or before 5 April 2026, the first £1m would have been taxed at the old 14% rate, £140,000, a total of £188,000.)

Common Pitfalls for Dentists

Several specific issues trip up dentists when claiming BADR on a practice sale.

1. The 24-Month Rule and Incorporation

If you incorporated your practice into a limited company within the last two years, you cannot claim BADR on a share sale unless you have held the shares for 24 months. The clock starts from incorporation, not from when you started the practice. If you incorporated 18 months ago and want to sell, you must wait six months or lose the relief.

2. Part-Time Working or Reduced Hours

HMRC expects that you are actively involved in the business as an officer or employee. If you have reduced your clinical hours significantly in the two years before sale, or if you are a non-working director, HMRC may argue you are not genuinely employed by the company. This is a particular risk for retiring principals who step back from clinical work but remain a director.

3. Multiple Practices and Group Structures

If you own multiple practices through different companies or partnerships, each entity is assessed separately. You cannot aggregate gains across different businesses to use the £1m limit more than once. Each individual has one lifetime limit, regardless of how many businesses they sell.

4. Selling Assets Rather Than Shares

If you sell the practice assets (goodwill, equipment, lease) rather than the company shares, the relief may still apply if you are selling as a sole trader or partnership. But if you are selling through a company and the buyer wants to buy assets rather than shares, the company pays corporation tax on the gain (at 19% or 25%), and then you extract the proceeds as dividends or salary, which are taxed again. BADR does not apply to asset sales by a company; it only applies to share disposals by individuals.

BADR vs. Investors' Relief

There is a separate relief called Investors' Relief, which carries the same 18% rate for 2026/27 (it moved in step with BADR, from 14% in 2025/26) and its own £1m lifetime limit, cut from £10m for disposals on or after 30 October 2024. However, it applies only to shares subscribed for in unlisted trading companies and held for at least three years. It is rarely relevant for practice owners selling their own business, but it may apply to external investors who put money into a dental corporate group.

Planning Before the Sale

If you are considering selling your dental practice, BADR planning should start at least two years before the expected sale date. Key steps include:

• Ensure you meet the 24-month ownership and employment conditions.
• If you are in a company, make sure your shareholding is at least 5% and you are a director or employee.
• Consider whether to sell shares or assets, and the tax implications of each.
• Keep records of your base cost (original purchase price, improvements, professional fees).
• Check whether you have used any of your £1m lifetime limit on previous disposals.

For more detailed guidance on practice valuation and sale structure, see our goodwill valuation and sale playbook.

What Changed on 6 April 2026?

The BADR rate increased from 14% to 18% on 6 April 2026. For a sale in 2026/27, the tax saving compared to the standard 24% rate is smaller than it was but still significant: up to £60,000 on the first £1m of gains. The £1m lifetime limit is unchanged. One transitional point still matters: for CGT the disposal date follows the contract, so if you exchanged unconditionally on or before 5 April 2026, your disposal keeps the 14% rate even if completion happened after that date. For everyone else, model the sale at 18%, and do not let the rate change push you into a sale on the wrong commercial terms.

Interaction with NHS Pension and Other Considerations

Selling a practice can also affect your NHS Pension. If you are in the 1995 section and take early retirement, there may be actuarial reductions. If you are in the 2015 CARE scheme, the sale does not directly affect your pension benefits, but the proceeds from the sale may push you into a higher tax bracket for the year, potentially triggering the annual allowance taper or the money purchase annual allowance (MPAA) if you contribute to a personal pension.

For more on how practice sale interacts with pension planning, see our NHS pension scheme essentials guide.

Can You Claim BADR on a Partial Disposal?

If you sell only part of your practice (for example, selling a branch while retaining the main practice), BADR may still apply if the part sold constitutes a distinct trade or business. HMRC looks at whether the part disposed of is a separate business in its own right. Selling a single surgery room within a larger practice is unlikely to qualify. Selling an entire branch practice with its own patient list, staff, and contracts may qualify, but you should seek professional advice.

What If You Are a Partner in a Dental Partnership?

Partners in a dental partnership can claim BADR on their share of the gain when the partnership sells the practice. The 24-month condition applies to the partner's ownership of their partnership interest. If a partner joined the partnership less than 24 months before the sale, they may not qualify for BADR on their share of the gain. This is a common issue in partnership buy-ins and buy-outs.

Record Keeping and Documentation

HMRC may enquire into a BADR claim. You should keep:

• Evidence of the 24-month ownership period (partnership agreements, company registers, share certificates).
• Evidence of your role as officer or employee (director appointment letters, payroll records, minutes of board meetings).
• Calculation of the gain (sale contract, valuation report, base cost records).
• Confirmation that the business is trading (practice accounts, tax returns).

For a full breakdown of the financial due diligence needed before a sale, see our practice purchase financial due diligence guide.

Summary of Key Points

• BADR reduces CGT to 18% on the first £1m of gains from a dental practice sale in 2026/27.
• The rate was 14% for disposals in 2025/26 and rose to 18% on 6 April 2026.
• You must own the business or shares for at least 24 months before disposal.
• For company share sales, you must be a director/employee with at least 5% shareholding.
• The £1m lifetime limit is per individual, not per practice.
• Common pitfalls include the 24-month rule after incorporation, part-time working, and asset sales vs. share sales.
• Plan at least two years ahead to ensure you meet the conditions.

If you are considering selling your dental practice, speak to a dental-specialist accountant who can model the tax outcome under different structures and help you optimise your claim. Contact our team at Dental Finance Partners for a confidential discussion.